Classifications

Covered in feathers: Feathers serve multiple functions, including insulation, waterproofing, and aiding in flight.
Lungs to breathe: Birds have a highly efficient respiratory system that includes air sacs for continuous airflow, allowing for high oxygen uptake.
Endotherm: Birds regulate their body temperature internally, maintaining a constant warm temperature regardless of external conditions.
Vertebrate: Birds possess a backbone made of vertebrae.
Can fly: Most birds have adapted forelimbs modified into wings, facilitating flight.
Beaks: The structure of their beaks varies greatly among species and aids in feeding habits.
Lay eggs with hard shells: Bird eggs are characterized by a hard, calcified shell, offering protection to the developing embryo.
Clawed feet/webbed feet: The adaptations of feet vary, with clawed feet ideal for perching or hunting and webbed feet beneficial for swimming.

Gills to breathe: Fish respire by extracting oxygen from water through their gills.
Vertebrate: Fish have a backbone.
Ectotherm: Fish are cold-blooded, and their body temperature varies with the surrounding water temperature.
Scaly skin: The skin of fish is covered in scales that protect against parasites and reduce drag in water.
Lay eggs with no protective shell: Fish typically lay eggs that are vulnerable without a hard protective shell.
Bodies are streamlined: The fusiform shape enhances efficiency in swimming.

Endotherm: Mammals maintain a constant body temperature through metabolic means.
Vertebrate: Mammals possess a backbone made of vertebrae.
Fur: Fur serves as insulation and protection.
Lungs: Mammals breathe air through lungs.
Feed young milk from mammary glands: This unique feature provides nourishment and antibodies to young mammals.

Vertebrate: Reptiles have backbones.
Ectotherm: Reptiles rely on environmental heat sources to regulate body temperature.
Scaly skin: Their scales minimize water loss and offer protection.
Lay eggs with tough, flexible shells: Reptilian eggs have leathery shells, allowing for gas exchange and reducing vulnerability from dehydration.

Moist skin: Amphibians have permeable skin that helps with respiration and hydration.
Ectotherm: Amphibians are cold-blooded, with body temperatures influenced by their environment.
Eggs laid in water: Most amphibian species breed in aquatic environments, where embryos develop.
Eggs with no protective covering: Amphibian eggs lack hard shells, increasing vulnerability to predation.
Young live in water and breathe through gills: Larval forms, like tadpoles, are aquatic and respire via gills.
Adults live on land and breathe through lungs: Once metamorphosed, adults typically transition to a terrestrial lifestyle with lung-based respiration.

Segmented or jointed bodies: Body structure is divided into segments, allowing for flexibility and mobility.
Paired or jointed legs: Arthropods possess multiple pairs of legs that enable locomotion.
Bodies are surrounded by exoskeleton: The hard external shell provides protection and resists water loss.

No legs: Worms utilize muscular contractions for movement rather than legs.
No shell: Worms' bodies lack an external hard shell, making them soft and vulnerable.
Soft and hollow body: The body can be round, flat, or segmented, facilitating movement through soil and other mediums.

Stinging cells: Specialized cells called nematocysts deliver stings to capture prey.
Soft, bag-like body: Cnidarians possess a simple body structure suitable for a simple lifestyle.
Tentacles: Tentacles are used for capturing prey and defense.
No legs or shells: Cnidarians have a simple body plan without limbs or hard protective coverings.

Soft body: The body structure is soft and unsegmented.
Sometimes covered in shell: Many mollusks possess a hard shell for protection, while others do not.
Well-developed internal organs: Mollusks have complex organ systems, including digestive and reproductive systems.
Large, muscular 'foot' for movement: The foot is a muscular structure used for locomotion or anchoring.
Compound eyes: Some mollusks, like cephalopods, have complex eyes capable of forming images.

Star-like appearance: Many echinoderms exhibit a radial symmetry resembling stars or other shapes.
Live in water: Echinoderms are predominantly marine organisms.
No heart, brain, or eyes: They possess a simple nerve net and lack centralized organs.
Internal network of canals to help move and feed: Their water vascular system allows for movement and the manipulation of tube feet.

Come in variety of shapes and sizes: Sponges display diverse morphologies and habitats.
Immobile: Sponges are sessile and do not move on their own.
Pump water through their hollow bodies to filter out their food: Sponges filter feed by drawing in water and extracting nutrients while expelling waste.

Special teeth for collecting and chewing grass: Adapted for a herbivorous diet, kangaroos have teeth suited for grinding plant material.
Pouch for protecting growing young: The marsupial pouch offers a secure environment for developing offspring.
Large, strong back legs which provide power for hopping: These adaptations enable them to travel long distances efficiently.
Large, muscular tail for balance when hopping: The tail assists in maintaining balance and stability during movement.
Lightly coloured and shiny fur to reflect heat: This adaptation helps regulate body temperature and manage heat exposure.
Special ability to stop embryo from developing during severe drought: This reproductive strategy allows kangaroos to conserve resources during unfavorable environmental conditions.

Bright, colourful flowers with lots of nectar to attract birds and mammals: These features encourage pollination and seed dispersal, promoting reproduction.
Bushfires open up the seeds to leave the plant: Some Banksia species depend on fire for germination, ensuring they thrive in fire-prone environments.
Each pod contains one or two small seeds, each with a wedge-shaped papery wing that causes it to spin as it falls to the ground: This unique adaptation aids in dispersing seeds more effectively by using wind dynamics.

Placental Mammals: These mammals develop a placenta during gestation, facilitating the exchange of nutrients and waste between mother and fetus. This extended gestational period allows for greater development before birth.
Marsupials: Animals that give birth to an underdeveloped fetus, which then crawls into the mother’s pouch for further development and nourishment.
Monotremes: Unique among mammals, monotremes lay eggs instead of giving birth to live young, representing a primitive form of reproduction among mammals.